Question about 1992 Chevrolet S-10

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1992 CHEVY S10 RAMDOMLY LOSES POWER

My 92 Chevy S10 with a 4.3 liter loses power randomly. I checked the codes and found the map sensor, I replaced that but nothing changed. I noticed that during the power loss the passenger side injector wasn't spraying. I checked the wire from the injector to the computer for continuity and that was fine. I changed the computer but retained the prom and the cal chips, still the same problem. I know the injector is good because I swapped wires from one side to the other and that injector works fine. any ideas would be great. This one has me stumped. Thank you.

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  • Chevrolet Master
  • 9,845 Answers

Have a look at the fuel pressure regulator.

Posted on Jul 11, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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alicantecoli
  • 22265 Answers

SOURCE: 98 chevy 1500 loses power

sounds like an ECU fault.one of the chips is breaking down when the units warms up

Posted on Nov 04, 2008

SOURCE: 1987 Chevy S10 TBI 4cyl 2.5 L will not run. I

Check the injector for 12v on one wire. if good check the other wire for a ground witth the key on. The ground wire pulses from the ECM If you dont have 12v from one wire to the other but you have 12v from one wire to battery ground then be sure the ground wire is good to the computer. If you don't have 12 v at any time check for open hot wire or bad fuse. ADD 12v to the hot wire at the injector. DO NOT add to the wrong wire or you will fry the computer

Posted on Jul 15, 2009

  • 4088 Answers

SOURCE: 1987 chevy s10 2.5l tbi will not start. changed

That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.

Posted on Jul 17, 2009

  • 1 Answer

SOURCE: 89 chevy S10 turns over won/t start but floods while turning over

If it has a carberater.The flots are probley sticking

Posted on Jul 19, 2009

hawkwindbear
  • 5 Answers

SOURCE: 1987 chevy engine problem

you have to reset base idle see manual at library for procedure

Posted on Jul 19, 2009

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